Spread spectrum microwave power generation for improving efficiency
- Univ. of Ghent (Belgium)
Microwave power for heating applications is normally generated in the designated ISM frequency bands which occupy a band of 4%. Actual microwave generators, such as are used in domestic ovens utilize only a small fraction of this bandwidth. It is being demonstrated that spreading the power uniformly over the full ISM band by controlled frequency modulation dramatically reduces all levels of potential electromagnetic interference. With such controlled modulation telecommunication channels can operate within the ISM bands without serious problems because the leakage levels are reduced by 20 to 30 dB with no additional shielding costs. One simple (though not optimum) modulating waveform is a large ripple voltage on the magnetron power supply. Frequency modulation that spreads the energy over the full ISM band also improves the overall energy efficiency in multimode heating applications.
- OSTI ID:
- 504887
- Report Number(s):
- CONF-960401-; ISBN 1-55899-333-9; TRN: IM9733%%302
- Resource Relation:
- Conference: Spring meeting of the Materials Research Society (MRS), San Francisco, CA (United States), 8-12 Apr 1996; Other Information: PBD: 1996; Related Information: Is Part Of Microwave processing of materials 5; Iskander, M.F. [ed.] [Univ. of Utah, Salt Lake City, UT (United States)]; Kiggans, J.O. Jr. [ed.] [Oak Ridge National Lab., TN (United States)]; Bolomey, J.C. [ed.] [Supelec, Gif-Sur-Yvette (France)]; PB: 681 p.; Materials Research Society symposium proceedings, Volume 430
- Country of Publication:
- United States
- Language:
- English
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